Recently I decided that, due to my BIOS being quite old, I'd like to flash a newer one on and see if that made any changes. However on the official HP website the only operating systems available were XP and Vista. I saw that the Vista BIOS was quite recent and thought that the BIOS might work for Windows 7 (my current OS) as well.
Since I've flashed the new BIOS my PC can't connect to my speakers at all, or make any sound. It's also running extremely slowly. I've looked up ways to try and roll back the BIOS but nothing comes up, and I can't seem to download the old BIOS anywhere. What can I do?